CN107189131B - Rubber composition, preparation method and its product of a kind of total wind hose internal layer of railway for braided steel wire structure - Google Patents
Rubber composition, preparation method and its product of a kind of total wind hose internal layer of railway for braided steel wire structure Download PDFInfo
- Publication number
- CN107189131B CN107189131B CN201710522999.XA CN201710522999A CN107189131B CN 107189131 B CN107189131 B CN 107189131B CN 201710522999 A CN201710522999 A CN 201710522999A CN 107189131 B CN107189131 B CN 107189131B
- Authority
- CN
- China
- Prior art keywords
- parts
- railway
- steel wire
- wire structure
- internal layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention belongs to artificial rubber technical fields, new rubber composition, preparation method and its product of the total wind hose internal layer of especially a kind of railway for braided steel wire structure, the composition includes nitrile rubber: 100 parts, carbon black: 80~150 parts, inorganic filler: 0~70 part, vulcanizing agent: 1~6.5 part, zinc oxide: 4~10 parts, stearic acid: 1~3 part, plasticizer: 10~30 parts, anti-aging agent: 1~3 part, adhesive: 2~10 parts.It the advantage is that, the total wind hose hose lining of the railway suitable for braided steel wire structure, and have the characteristics that high-air-tightness, low temperature resistant, high Mooney, low cost.
Description
Technical field
The invention belongs to artificial rubber technical field, it is related to a kind of total wind hose internal layer of the railway for braided steel wire structure
New rubber composition, preparation method and its product.
Background technique
With the continuous progress of science and technology, awareness of safety further increases, and requirement of the market to properties of product is also increasingly tight
Careful and science, total wind hose plays an important role in rolling stock safety traffic, due to Jie transmitted in total wind hose
Matter is compressed air, and rubber hose proposes the air-tightness of sizing material especially internal layer sizing material while meeting relevant railway standard
Higher requirement is gone out.But often the two is difficult to get both for cryogenic property and excellent air-tightness, in addition to this, for braided steel wire
Sebific duct catches up with glue phenomenon to occur frequently, and causes to seriously affect to production efficiency and product quality, especially will appear security risk.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of total wind hose internal layers of railway for braided steel wire structure
New rubber composition, preparation method and its product, while guaranteeing sizing material resistance to low temperature, have excellent air-tightness and
High Mooney viscosity main purpose is that while guaranteeing sizing material resistance to low temperature, have excellent air-tightness and high Mooney viscosity
And cost performance.
The invention discloses a kind of new rubber composition of the total wind hose internal layer of railway for braided steel wire structure,
Each component is prepared by following parts by weight:
Nitrile rubber: 100 parts, carbon black: 80~150 parts, inorganic filler: 0~70 part, vulcanizing agent: 1~6.5 part, oxidation
Zinc: 4~10 parts, stearic acid: 1~3 part, plasticizer: 10~30 parts, anti-aging agent: 1~3 part, adhesive: 2~10 parts.
Preferably, the new rubber composition of the total wind hose internal layer of the railway for braided steel wire structure, each group
Divide and prepared by following parts by weight:
Nitrile rubber: 100 parts, carbon black: 90~140 parts, inorganic filler: 20~60 parts, vulcanizing agent: 2~6.5 parts, oxidation
Zinc: 5~9 parts, stearic acid: 1~3 part, plasticizer: 15~30 parts, anti-aging agent: 1~3 part, adhesive: 3~8 parts.
Further, the content of bound acrylonitrile is 19%~35% by weight percentage in the nitrile rubber.
Preferably, the nitrile rubber is acrylonitrile content any one or several butyronitrile rubber in 19%~35%
The combination of glue.
Further, the anti-aging agent is mixed for one or both of anti-aging agent RD, aging inhibitor FR, antioxidant 4010NA
It closes.
Preferably, anti-aging agent uses the mixing of anti-aging agent RD, antioxidant 4010NA, the anti-aging agent RD, anti-aging agent
The mass ratio of 4010NA is 2:1~1.5.
Further, the carbon black be N550 carbon black, natural gas semi-reinforcing hydrocarbon black, any one in CF series carbon black or
Several arbitrary proportion mixture of person.
Further, the vulcanizing system uses sulfur cross-linking system.
Further, the vulcanizing agent includes sulphur, N, N- dicyclohexyl -2-2 benzothiazole sulfonamide (DCBS), N-
Cyclohexyl -2-[4-morpholinodithio sulfenamide (CZ), dibenzothiazyl disulfide (DM), tetramethylthiuram disulfide (TT), 4,
One of 4'- dimorpholinyl disulfide (DTDM), iso-cyanuric acid triallyl ester (TAIC) are a variety of.
Preferably, the vulcanizing agent uses S, DCBS, DTDM, and the mass ratio between sulphur and promotor is 1:2~1:1.
Further, the filler is sheet, the nano-functional of small particle fills out agent, and the additive amount of filler are as follows: 0~
60 parts.
Further, the plasticizer is dioctyl sebacate (DOS), adipic acid alkyl ether-ether (TP-95), adipate ester
Class (NB-4), preferably DOS.
Further, the carbon black and the filler additive amount are 150~210 parts, and gum content is 28%~35%.
Further, the invention also discloses the new type rubber groups of the total wind hose internal layer of railway for braided steel wire structure
Close the preparation method of object, comprising the following steps:
Step 1, the nitrile rubber for taking formula ratio, anti-aging agent, zinc oxide, stearic acid, layered fillers are added mixer and carry out
1~2min of kneading；
Carbon black and plasticizer, 2~3min of kneading are added into said mixture for step 2；
Vulcanizing agent, 1~2min of kneading, system are added when mixture temperature increases to 90~95 DEG C in mixer for step 3
Dumping when temperature reaches 110~115 DEG C；
Step 4 is to guarantee that rubber compounding is uniform, and the rubber compound being discharged from mixer needs to be turned on a mill
Glue, turning over the glue time is no less than 120 seconds, turns over to go out rubber compound at the silver of one fixed width through anti-mucus after glue, drying, park for 24 hours
It can be used to the preparation of product afterwards.
Further, the method for vulcanization includes: compression molding, the vulcanization of water vapour infantees, plastic (TPX) vulcanization or naked sulphur
At least one of change, hot-air cure.
Further, the invention also discloses a kind of total wind hose new type rubber systems of railway for braided steel wire structure
Product, which is characterized in that the new rubber composition including the total wind hose internal layer of the railway for braided steel wire structure.
Further, the novel rubber product of the total wind hose of the railway for braided steel wire structure further includes filler,
In terms of weight fraction, the filler additive amount is 150~210 parts, and gum content is 28%~35%.
The present invention selects acrylonitrile content any one or several nitrile rubbers in 19%~35%, can make glue
Material not only has good heat-proof aging and ozone-induced cracking performance, but also has good air-tightness, balances resistance to low temperature.
The present invention selects N550 carbon black, natural gas semi-reinforcing hydrocarbon black, any one in CF series carbon black or several appoints
It is reinforcing filler that meaning scalemic thereof and nano-functional, which fill out agent, and addition can assign sizing material superior gas by a certain percentage
Close property, higher stiffening property, small mouth-type expansion rate and good processing performance, and sizing material is made to keep good Physical Mechanical
Energy.
The present invention selects dioctyl sebacate (DOS), adipic acid alkyl ether-ether (TP-95), adipic acid esters (NB-4), excellent
Selecting DOS is plasticizer, and presses a certain amount of addition, can improve sizing material resistance to low temperature, air-tightness, resistance to liquid energy and processing
Performance.
The present invention selects zinc oxide and stearic acid is vulcanization aid, and vulcanization crosslinking degree, optimization sizing material and steel can be improved
Bond properties between silk.
The present invention selects the mixing of one or both of anti-aging agent RD, aging inhibitor FR, antioxidant 4010NA, has sizing material
Good heat-proof aging, crack resistance energy.
The present invention selects sulphur, N, N- dicyclohexyl -2-2 benzothiazole sulfonamide (DCBS), N- cyclohexyl -2- benzo
Thiazolesulfenamide (CZ), dibenzothiazyl disulfide (DM), tetramethylthiuram disulfide (TT), 4,4'- curing two
One of quinoline (DTDM), iso-cyanuric acid triallyl ester (TAIC) or a variety of collective effects are vulcanizing system, can be significant
Compactness, the physical mechanical property for improving vulcanizate, help to improve air-tightness, bond properties and state of cure (vulcanization).
The beneficial effects of the present invention are: the total wind hose hose lining of railway suitable for braided steel wire structure, and there is height
Air-tightness, low temperature resistant, high Mooney, low cost feature.
Specific embodiment
Below with reference to embodiment, further description of the specific embodiments of the present invention, and following embodiment is only used for more
Technical em- bodiments of the invention are clearly demonstrated, and not intended to limit the protection scope of the present invention.
Embodiment
Below with reference to specific example, technical scheme is described further.
1 embodiment 1-4 raw material components of table and its proportion
Raw material components are weighed according to proportion shown in table 1, and mixed refining process is carried out to raw material, comprising the following steps:
Step 1, the nitrile rubber for taking formula ratio, anti-aging agent, zinc oxide, stearic acid, layered fillers are added mixer and carry out
1~2min of kneading；
Carbon black and plasticizer, 2~3min of kneading are added into said mixture for step 2；
Vulcanizing agent, 1~2min of kneading, system are added when mixture temperature increases to 90~95 DEG C in mixer for step 3
Dumping when temperature reaches 110~115 DEG C；
Step 4 is to guarantee that rubber compounding is uniform, and the rubber compound being discharged from mixer needs to be turned on a mill
Glue, turning over the glue time is no less than 120 seconds, turns over to go out rubber compound at the silver of one fixed width through anti-mucus after glue, drying, park for 24 hours
It can be used to the preparation of product afterwards.
For the beneficial effect that the present invention is further explained, the present invention is compared using the prior art:
Comparative example
The invention discloses the new rubber composition of the total wind hose internal layer of railway for braided steel wire structure, each groups
Divide and prepared by following parts by weight:
Nitrile rubber: 100 parts, zinc oxide: 5 parts, stearic acid: 1 part, anti-aging agent: 2 parts, N330:60 parts of carbon black, carbon black
N660:20 parts, clay: 20 parts, sulphur: 1.5 parts, diphenylguanidine: 0.5 part, altax: 1 part.
Rubber product obtained is according to standard " GB/T 531.1-2008 ", " GB/T 528-2009 ", " GB/T 3512-
2014 ", " GB/T 7759.1-2014 " is tested, and the results are shown in Table 2.
The performance parameter of sulfur cross-linking EPT rubber composition made from 2 embodiment 1-5 of table and comparative example
The above is only preferred embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of rubber composition of the total wind hose internal layer of railway for braided steel wire structure, which is characterized in that by such as the following group
It is grouped as, each component is prepared by following parts by weight:
Nitrile rubber: 100 parts, carbon black: 90~140 parts, inorganic filler: 20~60 parts, vulcanizing agent: 2~6.5 parts, zinc oxide: 5
~9 parts, stearic acid: 1~3 part, plasticizer: 15~30 parts, anti-aging agent: 1~3 part, adhesive: 3~8 parts；The nitrile rubber
The content of middle bound acrylonitrile is 19%~35% by weight percentage；The inorganic filler is layered nano silicate；Institute
Stating plasticizer is dioctyl sebacate or adipic acid esters.
2. the rubber composition for the total wind hose internal layer of railway of braided steel wire structure as described in claim 1, feature
It is, the nitrile rubber is acrylonitrile content combination of any one or several nitrile rubbers in 19%~35%.
3. the rubber composition for the total wind hose internal layer of railway of braided steel wire structure as described in claim 1, feature
It is, the anti-aging agent is the mixing of one or both of anti-aging agent RD, aging inhibitor FR, antioxidant 4010NA.
4. the rubber composition for the total wind hose internal layer of railway of braided steel wire structure as claimed in claim 3, feature
It is, anti-aging agent uses the mixing of anti-aging agent RD, antioxidant 4010NA, the quality of the anti-aging agent RD, antioxidant 4010NA
Than for 2:1~1.5.
5. the rubber composition for the total wind hose internal layer of railway of braided steel wire structure as described in claim 1, feature
It is, the carbon black is N550 carbon black, natural gas semi-reinforcing hydrocarbon black, any one in CF series carbon black or several any
Scalemic thereof；
The vulcanizing agent is sulphur, N, N- dicyclohexyl -2-2 benzothiazole sulfonamide (DCBS), N- cyclohexyl -2- benzo thiophene
Azoles sulfenamide (CZ), dibenzothiazyl disulfide (DM), tetramethylthiuram disulfide (TT), 4,4'- dimorpholinyl disulfide
(DTDM), one of iso-cyanuric acid triallyl ester (TAIC) or a variety of；
The plasticizer is dioctyl sebacate.
6. the rubber composition for the total wind hose internal layer of railway of braided steel wire structure as described in claim 1, feature
It is, the plasticizer is adipic acid alkyl ether-ether.
7. a kind of rubber product of the total wind hose internal layer of railway for braided steel wire structure, which is characterized in that used such as power
Benefit requires the rubber composition described in 1-6 any one for the total wind hose internal layer of railway of braided steel wire structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710522999.XA CN107189131B (en) | 2017-06-30 | 2017-06-30 | Rubber composition, preparation method and its product of a kind of total wind hose internal layer of railway for braided steel wire structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710522999.XA CN107189131B (en) | 2017-06-30 | 2017-06-30 | Rubber composition, preparation method and its product of a kind of total wind hose internal layer of railway for braided steel wire structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107189131A CN107189131A (en) | 2017-09-22 |
| CN107189131B true CN107189131B (en) | 2019-08-20 |
Family
ID=59881045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710522999.XA Active CN107189131B (en) | 2017-06-30 | 2017-06-30 | Rubber composition, preparation method and its product of a kind of total wind hose internal layer of railway for braided steel wire structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107189131B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533968A (en) * | 2019-12-31 | 2020-08-14 | 刘柄签 | High-pulse-resistance steel wire woven rubber hose for engineering machinery |
| CN112574483A (en) * | 2020-12-17 | 2021-03-30 | 温州德邦高分子科技有限公司 | Environment-friendly nitrile rubber and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734571A (en) * | 2012-07-02 | 2012-10-17 | 漯河市利通橡胶有限公司 | Compact steel wire braided rubber hose and preparation method thereof |
| CN104100783A (en) * | 2013-04-12 | 2014-10-15 | 漯河市亿博橡胶科技有限公司 | Ultra-high-pressure steel wire winding composite hose |
| CN105602040A (en) * | 2016-01-28 | 2016-05-25 | 漯河市邦威橡胶有限公司 | High-pressure braided-hose inner-layer rubber and preparing method thereof |
| CN105602042A (en) * | 2016-01-29 | 2016-05-25 | 漯河市邦威橡胶有限公司 | High-pressure braided-hose inner-layer rubber |
| CN105889659A (en) * | 2015-01-26 | 2016-08-24 | 河南汇龙液压科技股份有限公司 | Hydraulic hose |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338047B (en) * | 2008-08-14 | 2010-12-15 | 中国铁道科学研究院金属及化学研究所 | Low rigidity, low compression permanent deformation cold tolerant butadiene nitrile rubber compositions |
| CN101381488A (en) * | 2008-11-04 | 2009-03-11 | 中国矿业大学(北京) | Kaolin/rubber nano compound material with strengthening and obstructing dual property |
-
2017
- 2017-06-30 CN CN201710522999.XA patent/CN107189131B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734571A (en) * | 2012-07-02 | 2012-10-17 | 漯河市利通橡胶有限公司 | Compact steel wire braided rubber hose and preparation method thereof |
| CN104100783A (en) * | 2013-04-12 | 2014-10-15 | 漯河市亿博橡胶科技有限公司 | Ultra-high-pressure steel wire winding composite hose |
| CN105889659A (en) * | 2015-01-26 | 2016-08-24 | 河南汇龙液压科技股份有限公司 | Hydraulic hose |
| CN105602040A (en) * | 2016-01-28 | 2016-05-25 | 漯河市邦威橡胶有限公司 | High-pressure braided-hose inner-layer rubber and preparing method thereof |
| CN105602042A (en) * | 2016-01-29 | 2016-05-25 | 漯河市邦威橡胶有限公司 | High-pressure braided-hose inner-layer rubber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107189131A (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106543505B (en) | A kind of high-performance acrylonitrile butadiene packing material and preparation method thereof | |
| CN104692027B (en) | Preparation method of basalt fiber conveying belt | |
| JP5617638B2 (en) | Method for producing crosslinkable nitrile copolymer rubber composition for fuel hose and rubber cross-linked product for fuel hose | |
| CN104119578B (en) | Rubber composition for the truck radial tire tread of low hysteresis loss | |
| CN107189236A (en) | Sulfur cross-linking EPT rubber composition, preparation method, purposes and its application product that a kind of heat-proof aging, low pressure become | |
| CN103289215B (en) | Ethylene propylene diene monomer rubber for automobile brake hose and preparation method thereof | |
| CN103642097A (en) | Preparation method of nitrile butadiene rubber for preparing seal ring of floating oil seal with high wear resistance | |
| CN107189131B (en) | Rubber composition, preparation method and its product of a kind of total wind hose internal layer of railway for braided steel wire structure | |
| CN105733102A (en) | Environment-friendly anti-blooming ethylene propylene rubber compound | |
| CN103087432A (en) | Flame-retardant and oil-resistant marine rubber material and molding preparation method thereof | |
| CN107298778A (en) | A kind of high temperature resistant butyronitrile rubber seal | |
| CN104592589A (en) | Nitrile rubber/polyvinyl chloride composite material and preparation method thereof | |
| CN103146084A (en) | Composition as well as preparation method and application thereof | |
| EP3027423B1 (en) | Rubber tyre compound production method | |
| CN109929160A (en) | The application of organo silane coupling agent and rubber composition and vulcanized rubber and its preparation method and application | |
| CN105733041B (en) | A kind of full steel engineering radial-type tyre sidewall rubber | |
| CN105330906B (en) | A kind of impact resistance tear-proof steel cable core conveying belt rubber cover and preparation method | |
| CN105860533A (en) | High and low temperature resisting rubber material for automotive air conditioner rubber tube and preparing method thereof | |
| CN104774392A (en) | Novel high temperature-resistant cover rubber | |
| CN107540963A (en) | A kind of composite material of airtight layer of tire and preparation method thereof | |
| CN111019244A (en) | Rubber material, cooling rubber pipe prepared from rubber material and automobile engine comprising cooling rubber pipe | |
| JP2019210398A (en) | Rubber composition for tread and pneumatic tire | |
| CN107857909A (en) | A kind of check-valves elastomeric material and preparation method thereof | |
| JP6849024B2 (en) | Rubber composition for tires and tires | |
| JP5593669B2 (en) | Rubber composition and pneumatic tire using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |